/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.bigtop.datagenerators.samplers.samplers;

import java.util.Random;

import org.apache.bigtop.datagenerators.samplers.SeedFactory;

public class GaussianSampler implements Sampler<Double>
{
	double mean;
	double std;
	Random rng;

	public GaussianSampler(double mean, double std, SeedFactory seedFactory)
	{
		rng = new Random(seedFactory.getNextSeed());
		this.mean = mean;
		this.std = std;
	}

	public Double sample()
	{
		return rng.nextGaussian() * std + mean;
	}
}
